2001 Stratus R/T dies

My son has a 2001 Stratus R/T with a 3.0 V6 engine. It started to die occasionly when at stop signs and now it has gotten worse. After the car warms up it chugs and dies. The scanner codes are 335 and 340 which are crankshaft position error and camshaft position error. Anybody have any ideas where to start?

I'd replace both of those... Maybe see which one is cheaper and replace that one first. Both of those should be available used... Maybe try car-part.com for good used parts...

This is going to sound crazy, but my friend Ruthie had her Neon do that. It was really her O2 sensor. The car would warm up and she had it stall out every time she came to a stop.

Good luck.